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Insulation R Values: cellulose
982 to 991
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta t (F) | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method | trade name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cellulose | 982 | 4/21/1955 | 24.29 | 0.9911 | 1.52 | — | Loose | 0.2936 | Cellulose | 73.89 | 0.491239 | 0.086512 | NIST SRD 81 API | ASTM C 177 | Insulgard |
| cellulose | 985 | 4/29/1955 | 24.4 | 0.9886 | 2.84 | Leached through distilled water (6 times), air-dried 105 °C, re-fluffed by hand | Loose | 0.3061 | Cellulose | 74.01 | 0.471179 | 0.082979 | NIST SRD 81 API | ASTM C 177 | Insulgard |
| cellulose | 991 | 5/23/1955 | 24.93 | 0.991 | 3.049 | — | Loose | 0.2822 | Cellulose | 72.35 | 0.511084 | 0.090007 | NIST SRD 81 API | ASTM C 177 | Insulgard |
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